XIV ADDITIONAL NOTES. If Herodotus's ideas about the upper Danube were wild, his information concerning its lower course and its tributaries in the Balkan peninsula was fairly accurate. He owed this knowledge to Greek travellers from the colonies near the Danube estuary, who had explored the lower reaches of the river and several tributaries on either bank. See V. P&rvan, Dada, ch. 3. P. 85,1. 22. Rivers of South Russia The Dnieper was known to the Greeks as far as the rapids near Kieff j but at no time did ancient Mediterranean travellers penetrate far into the interior of Europe by way of the Russian rivers. Herodotus imagined the rivers of south-western Russia as having their source in four large lakes. Two of his contemporaries, Damastes (fr. i Jacoby) and Hellanicus (fr. 187, Jacoby), postulated a range of mountains, the